I am purchasing a Martin Flyer Engagement Ring. The ring is a Flyer Fit, has a bezel and side stones, .55c weight, and 18K white gold. The center diamond is a GIA certified 1.04, F, SI-2. The inclusion is white. I am new to diamonds, I think the flaw is described as a feather. I cannot see it with my naked eye. I have made a down payment and they are holding it for me. The will refund 100% of my money if I decide not to buy it. The price is $4,900 and this includes diamond, ring, tax and comes with free cleanings, sizings, and covers tips, prongs, and any other service for life. I really like this ring and was wondering if this is a good price. Your advice is greatly appreciated.